Improvement in plow-clevises



UNITED STATES r Qrrron.

IMPROVEMENT IN PLOW-CLEVISES.

Specification forming part of Letters Patent No. 117,187, dated July 18, 1871.

To all whom it muy concern:

Be it known that I, ANDREW MGC0LLAM, of the city of New Orleans, in the parish of Orleans and State of Louisiana, have invented an Improved Olevis for Plows; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompan ying drawing br1ning part of this specification, in which Figure 1 is a side elevation, showing the clevis r attached to the beam; Fig. 2, a plan of the same;

Fig. 3, an elevation showing one of the side plates detached; and Fig. 4, an edge view of the same.

Similar letters in the drawing denote corre spondin g parts.

This inventiori consists in an improved form of clevis to regulate the depth of furrow, together with adjusting washers or rings to regulate the Width of the furrows, as hereinafter set forth.

In the drawing, A is the clevis, and B the plowbeam. The clevis is composed of two iron plates, a a, of the form shown in Fig. 3, bolted through the plow-heam at e e, as shown in Figs. 1 and 2, and provided with a series of holes, o o o,

in any one of which may be secured the pin c to which the draft is applied, so that by adjusting said pin in the different h0les the depth of the furrow may be regulated at pleasure. To regulate the Width of the furrow-slice one or more rings or washers, mm, are applied to the pin c, and by a djusting them to the right or left of the draft-chain the object is accomplished.

This improved clevis secures superior strength, durability, steadiness of draft, and economy of construction, and does away with the wearing of the beann by the land-pin, s0 common in the ordinary clevis, while its permanent attachment to the pl0w secures it from any danger of loss.

Having thus described my invention, what I claim as new thefein, and desire to secure by Letters Patent, is

The clevis A, provided with the adjusting-rin gs m m, substantially as and for the purposes specified.

ANDREW MCCOLLAM.

Wituesses:

R. S. SIMS, A. W. CONNELY. 

